AS257 · Navy Network Information Center (NNIC)

11

IPv4 prefixes

1,004

Announced IPv4 slots

5

IPv6 prefixes

🇺🇸 US

Country

Summary

AS number: AS257
Name: Navy Network Information Center (NNIC)
Country: 🇺🇸 United States
Type: ARIN
Category: government
Normalized type: government
Organization domain: Unknown
Domain evidence: Unknown
Last changed: Unknown
Announced: 16 prefixes
Updated: 2026-08-12

IPv4 prefixes on this page (11 of 11)

Prefix
137.164.24.188/31
137.164.50.148/30
137.164.50.252/30
204.102.228.0/25
204.102.228.128/25
204.102.229.0/24
204.102.230.112/31
205.155.65.0/24
205.155.239.128/27
209.129.248.0/25
209.129.248.192/26

IPv6 prefixes on this page (5 of 5)

Prefix
2607:f380:1::108:9a41:8bc0/123
2607:f380:1::118:9a43:2940/122
2607:f380:1::118:9a43:2fc0/122
2607:f380:1::11c:c66e:6700/123
2607:f380:804::/48

Address slots sum announced prefixes; overlapping routes count separately.